Open AccessChronic Hypertension, Pregnancy-Induced Hypertension, and Low Birthweight
Author(s) -
Priscilla Velentgas,
Elisabeth Benga-De,
Michelle A. Williams
Publication year - 1994
Publication title -
epidemiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.901
H-Index - 173
eISSN - 1531-5487
pISSN - 1044-3983
DOI - 10.1097/00001648-199405000-00015
Subject(s) - chronic hypertension , medicine , birth certificate , pregnancy , confidence interval , obstetrics , retrospective cohort study , cohort study , preeclampsia , population , genetics , environmental health , biology
We examined the associations between chronic hypertension, pregnancy-induced hypertension, and low birthweight in a retrospective cohort study using Washington birth certificate data. The adjusted prevalence ratio for low birthweight associated with chronic hypertension was 3.9 [95% confidence interval (CI) = 3.4-4.4]. The prevalence ratio for pregnancy-induced hypertension associated with chronic hypertension ranged from 3.6 (95% CI = 3.2-4.1) for primiparous women to 10.7 (95% CI = 8.7-13.2) for multiparous women. The association of chronic hypertension and low birthweight could not be explained by the increased risk of pregnancy-induced hypertension in these women.